This article shows an innovative
method to model and validate the hot air flow through the blast furnacés
tuyeres. This study will be the basis for flow measurements implementation and
safety interlocks for the pulverized coal injection. The flow measurements were
taken in the blast furnace down leg pipes by installing refractory Venturi
tubes. The system for the calculation of differential pressure takes into
consideration the dimension of the Venturi, the air density and
compressibility. The objective is to specify the flow transmitters required to automate a control system
and implement safety interlocks for the coal injection plant.
References
[1]
M. et Alli, “Modeling of the Measurement of Flow Measurement of the Flow of Hot Air in Straight Tube of Blast Furnace,” 39th Seminar of Reduction of Ore of Iron and Raw Materials, Ouro Preto, 22-26 November 2009, pp. 1-10.
[2]
G. J. Delmée, “Manual de Medicao de Vazao,” Editora Edgard Blücher Ltda, Sao Paulo, 1983.
[3]
E. C. Bortoni and Z. Souza, “Instrumentation for Energy and Industrial Systems,” Editora Novo Mundo Ltda, Itajubá, 2006.
[4]
L. Siglüeri and A. Nishinori, “Controls Automatic of Industrial Processes,” Edgard Blücher Ltda, Sao Paulo, 1992.
[5]
A. Johansson and A. Medvedev, “Detection of Incipient Clogging in Pulverised Coal Injection Lines,” IEEE Transactions on Industry Applications, Vol. 36, No. 3, 2000, pp. 877-883. http://dx.doi.org/10.1109/28.845065
[6]
W. Birk, A. Johansson and A. Medvedev, “Model-Based Goes to Fine Coal Injection Plant,” IEEE Control Systems Magazine, Vol. 19, No. 1, 1997, pp. 33-43.
http://dx.doi.org/10.1109/37.745765
